> -----Original Message----- > From: Christopher Schultz [mailto:ch...@christopherschultz.net] > Sent: Thursday, September 16, 2010 9:16 AM > To: Tomcat Users List > Subject: Re: [OT] Tomcat on Linux > > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > George, > > On 9/15/2010 7:26 PM, George Sexton wrote: > > My servers stay up for months at a time. Most of my production > > servers have been up for more than six months. I do have to re-start > > tomcat every couple of weeks or so. > > Why do you have to restart Tomcat? Do you have a leaky webapp?
I don't think my webapp is leaky. Things like file handles, db connections, all stay pretty constant. I do have undeploy/re-deploy's of virtual hosts periodically. Maybe around 30 per week. Perhaps that's where the issue is. I did dumps using JMap after undeploying my webapp and can see that there are no objects remaining allocated after the undeploy. I'm running 300+ virtual hosts per machine, and around 300,000 hits per day per host. It looks to me like the memory just gets fragmented and eventually things fail. I can run around 3 weeks before a machine crashes, so around 6-7 million hits. Another problem (at least w/ JDK 1.6.0.20) was that on one machine, with 4GB allocated, the garbage collection of the OldGen space would start to take a REALLY long time. Say 3-8 minutes. That's on a dual 2-core XEON 2.66Ghz CPU's. JDK 1.6.0.21 seems to have improved that. > > - -chris > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.10 (MingW32) > Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ > > iEYEARECAAYFAkySNLEACgkQ9CaO5/Lv0PC13QCfT+vrwmmuba5lm37Eu6gDknco > 8kQAn1/E9+ozi4EF/fDpoRGoMUJEyq79 > =AzUE > -----END PGP SIGNATURE----- > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org George Sexton MH Software, Inc. 303 438-9585 www.mhsoftware.com --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
